/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
 
This file is part of Quake III Arena source code.
 
Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
 
Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
//
#include "ui_local.h"

#define ART_BACK0			"menu/art/back_0"
#define ART_BACK1			"menu/art/back_1"
#define ART_FIGHT0			"menu/art/load_0"
#define ART_FIGHT1			"menu/art/load_1"
#define ART_FRAMEL			"menu/art/frame2_l"
#define ART_FRAMER			"menu/art/frame1_r"

#define MAX_MODS			64
#define NAMEBUFSIZE			( MAX_MODS * 48 )
#define GAMEBUFSIZE			( MAX_MODS * 16 )

#define ID_BACK				10
#define ID_GO				11
#define ID_LIST				12


typedef struct
{
    menuframework_s	menu;

    menutext_s		banner;
    menubitmap_s	framel;
    menubitmap_s	framer;

    menulist_s		list;

    menubitmap_s	back;
    menubitmap_s	go;

    char			description[NAMEBUFSIZE];
    char			fs_game[GAMEBUFSIZE];

    char			*descriptionPtr;
    char			*fs_gamePtr;

    char			*descriptionList[MAX_MODS];
    char			*fs_gameList[MAX_MODS];
}
mods_t;

static mods_t	s_mods;


/*
===============
UI_Mods_MenuEvent
===============
*/
static void UI_Mods_MenuEvent( void *ptr, int event )
{
    if( event != QM_ACTIVATED )
    {
        return;
    }

    switch ( ((menucommon_s*)ptr)->id )
    {
    case ID_GO:
        Cvar_Set( "fs_game", s_mods.fs_gameList[s_mods.list.curvalue] );
        Cbuf_ExecuteText( EXEC_APPEND, "vid_restart;" );
        UI_PopMenu();
        break;

    case ID_BACK:
        UI_PopMenu();
        break;
    }
}


/*
===============
UI_Mods_ParseInfos
===============
*/
static void UI_Mods_ParseInfos( char *modDir, char *modDesc )
{
    s_mods.fs_gameList[s_mods.list.numitems] = s_mods.fs_gamePtr;
    Q_strncpyz( s_mods.fs_gamePtr, modDir, 16 );

    s_mods.descriptionList[s_mods.list.numitems] = s_mods.descriptionPtr;
    Q_strncpyz( s_mods.descriptionPtr, modDesc, 48 );

    s_mods.list.itemnames[s_mods.list.numitems] = s_mods.descriptionPtr;
    s_mods.descriptionPtr += strlen( s_mods.descriptionPtr ) + 1;
    s_mods.fs_gamePtr += strlen( s_mods.fs_gamePtr ) + 1;
    s_mods.list.numitems++;
}


#if 0 // bk001204 - unused
/*
===============
UI_Mods_LoadModsFromFile
===============
*/
static void UI_Mods_LoadModsFromFile( char *filename )
{
    int				len;
    fileHandle_t	f;
    char			buf[1024];

    len = FS_FOpenFileByMode( filename, &f, FS_READ );
    if ( !f )
    {
        Com_Printf( va( S_COLOR_RED "file not found: %s\n", filename ) );
        return;
    }
    if ( len >= sizeof(buf) )
    {
        Com_Printf( va( S_COLOR_RED "file too large: %s is %i, max allowed is %i", filename, len, sizeof(buf) ) );
        FS_FCloseFile( f );
        return;
    }

    FS_Read2( buf, len, f );
    buf[len] = 0;
    FS_FCloseFile( f );

    len = strlen( filename );
    if( !Q_stricmp(filename +  len - 4,".mod") )
    {
        filename[len-4] = '\0';
    }

    UI_Mods_ParseInfos( filename, buf );
}
#endif


/*
===============
UI_Mods_LoadMods
===============
*/
static void UI_Mods_LoadMods( void )
{
    int		numdirs;
    char	dirlist[2048];
    char	*dirptr;
    char  *descptr;
    int		i;
    int		dirlen;

    s_mods.list.itemnames = (const char **)s_mods.descriptionList;
    s_mods.descriptionPtr = s_mods.description;
    s_mods.fs_gamePtr = s_mods.fs_game;

    // always start off with baseq3
    s_mods.list.numitems = 1;
    s_mods.list.itemnames[0] = s_mods.descriptionList[0] = "Quake III Arena";
    s_mods.fs_gameList[0] = "";

    numdirs = FS_GetFileList( "$modlist", "", dirlist, sizeof(dirlist) );
    dirptr  = dirlist;
    for( i = 0; i < numdirs; i++ )
    {
        dirlen = strlen( dirptr ) + 1;
        descptr = dirptr + dirlen;
        UI_Mods_ParseInfos( dirptr, descptr);
        dirptr += dirlen + strlen(descptr) + 1;
    }

    Com_Printf( va( "%i mods parsed\n", s_mods.list.numitems ) );
    if (s_mods.list.numitems > MAX_MODS)
    {
        s_mods.list.numitems = MAX_MODS;
    }
}


/*
===============
UI_Mods_MenuInit
===============
*/
static void UI_Mods_MenuInit( void )
{
    UI_ModsMenu_Cache();

    memset( &s_mods, 0 ,sizeof(mods_t) );
    s_mods.menu.wrapAround = qtrue;
    s_mods.menu.fullscreen = qtrue;

    s_mods.banner.generic.type		= MTYPE_BTEXT;
    s_mods.banner.generic.x			= 320;
    s_mods.banner.generic.y			= 16;
    s_mods.banner.string			= "MODS";
    s_mods.banner.color				= color_white;
    s_mods.banner.style				= UI_CENTER;

    s_mods.framel.generic.type		= MTYPE_BITMAP;
    s_mods.framel.generic.name		= ART_FRAMEL;
    s_mods.framel.generic.flags		= QMF_INACTIVE;
    s_mods.framel.generic.x			= 0;
    s_mods.framel.generic.y			= 78;
    s_mods.framel.width				= 256;
    s_mods.framel.height			= 329;

    s_mods.framer.generic.type		= MTYPE_BITMAP;
    s_mods.framer.generic.name		= ART_FRAMER;
    s_mods.framer.generic.flags		= QMF_INACTIVE;
    s_mods.framer.generic.x			= 376;
    s_mods.framer.generic.y			= 76;
    s_mods.framer.width				= 256;
    s_mods.framer.height			= 334;

    s_mods.back.generic.type		= MTYPE_BITMAP;
    s_mods.back.generic.name		= ART_BACK0;
    s_mods.back.generic.flags		= QMF_LEFT_JUSTIFY|QMF_PULSEIFFOCUS;
    s_mods.back.generic.id			= ID_BACK;
    s_mods.back.generic.callback	= UI_Mods_MenuEvent;
    s_mods.back.generic.x			= 0;
    s_mods.back.generic.y			= 480-64;
    s_mods.back.width				= 128;
    s_mods.back.height				= 64;
    s_mods.back.focuspic			= ART_BACK1;

    s_mods.go.generic.type			= MTYPE_BITMAP;
    s_mods.go.generic.name			= ART_FIGHT0;
    s_mods.go.generic.flags			= QMF_RIGHT_JUSTIFY|QMF_PULSEIFFOCUS;
    s_mods.go.generic.id			= ID_GO;
    s_mods.go.generic.callback		= UI_Mods_MenuEvent;
    s_mods.go.generic.x				= 640;
    s_mods.go.generic.y				= 480-64;
    s_mods.go.width					= 128;
    s_mods.go.height				= 64;
    s_mods.go.focuspic				= ART_FIGHT1;

    // scan for mods
    s_mods.list.generic.type		= MTYPE_SCROLLLIST;
    s_mods.list.generic.flags		= QMF_PULSEIFFOCUS|QMF_CENTER_JUSTIFY;
    s_mods.list.generic.callback	= UI_Mods_MenuEvent;
    s_mods.list.generic.id			= ID_LIST;
    s_mods.list.generic.x			= 320;
    s_mods.list.generic.y			= 130;
    s_mods.list.width				= 48;
    s_mods.list.height				= 14;

    UI_Mods_LoadMods();

    Menu_AddItem( &s_mods.menu, &s_mods.banner );
    Menu_AddItem( &s_mods.menu, &s_mods.framel );
    Menu_AddItem( &s_mods.menu, &s_mods.framer );
    Menu_AddItem( &s_mods.menu, &s_mods.list );
    Menu_AddItem( &s_mods.menu, &s_mods.back );
    Menu_AddItem( &s_mods.menu, &s_mods.go );
}

/*
=================
UI_Mods_Cache
=================
*/
void UI_ModsMenu_Cache( void )
{
    RE_RegisterShaderNoMip( ART_BACK0 );
    RE_RegisterShaderNoMip( ART_BACK1 );
    RE_RegisterShaderNoMip( ART_FIGHT0 );
    RE_RegisterShaderNoMip( ART_FIGHT1 );
    RE_RegisterShaderNoMip( ART_FRAMEL );
    RE_RegisterShaderNoMip( ART_FRAMER );
}


/*
===============
UI_ModsMenu
===============
*/
void UI_ModsMenu( void )
{
    UI_Mods_MenuInit();
    UI_PushMenu( &s_mods.menu );
}
